Android第7周作业

package com.example.an;

import android.net.Uri;
import android.os.Bundle;
import android.app.Activity;
import android.content.Intent;
import android.util.Log;
import android.view.Menu;
import android.view.View;

public class MainActivity extends Activity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        Log.e("MainActivity", "调用oncreate");//在logcat里输出，标签为MainActivity，提示信息为调用oncreate
        
    }
   
    @Override
    protected void onStart() {
        // TODO Auto-generated method stub
        super.onStart();
        Log.e("MainActivity", "调用onstart");
    }
    @Override
    protected void onResume() {
        // TODO Auto-generated method stub
        super.onResume();
        Log.e("MainActivity", "调用onresume");
    }
    @Override
    protected void onPause() {
        // TODO Auto-generated method stub
        super.onPause();
        Log.e("MainActivity", "调用onpause");
    }
    
    @Override
    protected void onStop() {
        // TODO Auto-generated method stub
        super.onStop();
        Log.e("MainActivity", "调用onstop");
    }
    
    @Override
    protected void onDestroy() {
        // TODO Auto-generated method stub
        super.onDestroy();
        Log.e("MainActivity", "调用ondestroy");
    }
    
    @Override
    protected void onRestart() {
        // TODO Auto-generated method stub
        super.onRestart();
        Log.e("MainActivity", "调用onRestart");
    }
    
  
    
    //使用隐式意图开启界面2（不同应用程序，用隐式意图，例如开启浏览器、手机照相机等）
    public void click2(View view){
        Intent intent=new Intent();
        intent.setAction("com.gd.activity2");
        intent.addCategory("android.intent.category.DEFAULT");
        startActivity(intent);
    }
    
    public void click3(View view){
        Intent intent=new Intent();
        intent.setAction("android.intent.action.VIEW");
        intent.setData(Uri.parse("http://www.baidu.com"));
        startActivity(intent);
        
    }
    public void click4(View view){
        Intent intent=new Intent();
        intent.setAction("android.intent.action.VIEW");
        intent.setData(Uri.parse("tel:123456"));
        startActivity(intent);
        
    }
    
    public void click5(View view){
        Intent intent=new Intent();
        intent.setAction("android.media.action.IMAGE_CAPTURE");
        intent.addCategory("android.intent.category.DEFAULT");
        startActivity(intent);
        
    }


    
}

package com.example.an;

import android.app.Activity;
import android.os.Bundle;

public class SecondActivity extends Activity {
    
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        // TODO Auto-generated method stub
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_second);
    }

}

package com.example.an;

import android.os.Bundle;
import android.app.Activity;
import android.view.Menu;

public class ThirdActivity extends Activity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_third);
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.third, menu);
        return true;
    }

}

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    tools:context=".MainActivity"
    android:orientation="vertical" >

    <Button
        android:id="@+id/btn1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="显式意图开启界面2"
        android:onClick="click1"
        />
    
      <Button          
        android:id="@+id/btn2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="隐式意图开启界面2"
       
        android:onClick="click2"        
        />
       <Button          
        android:id="@+id/btn3"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="开启浏览器访问百度"       
        android:onClick="click3"        
        />
        <Button          
        android:id="@+id/btn4"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="拨号"       
        android:onClick="click4"        
        />
         <Button          
        android:id="@+id/btn5"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="启动照相机"       
        android:onClick="click5"        
        />

</LinearLayout>

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    tools:context=".MainActivity" >

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="界面2" />

</RelativeLayout>

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    tools:context=".ThirdActivity" >

    <TextView android:id="@+id/tv1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="界面3" />
    
       

</LinearLayout>

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.example.an"
    android:versionCode="1"
    android:versionName="1.0" >

    <uses-sdk
        android:minSdkVersion="8"
        android:targetSdkVersion="14" />

    <application
        android:allowBackup="true"
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name"
        android:theme="@style/AppTheme" >
        <activity
            android:name="com.example.zhou.MainActivity"
            android:label="@string/app_name" >
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
        <activity
            android:name="com.example.zhou.SecondActivity"
            android:label="@string/title_activity_second" >
        </activity>
        <activity
            android:name="com.example.zhou.ThirdActivity"
            android:label="@string/title_activity_third" >
        </activity>
    </application>

</manifest>

 

 

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".MainActivity"
    android:orientation="vertical">

    <Button
        android:id="@+id/bt_1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="开启访问百度"
        android:textSize="30dp"
        android:onClick="click1" />

</LinearLayout>

package com.example.myapplication103;
import android.net.Uri;
import android.os.Bundle;
import android.app.Activity;
import android.content.Intent;
import android.util.Log;
import android.view.Menu;
import android.view.View;

public class MainActivity extends Activity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        Log.e("MainActivity", "调用oncreate");
    }

    @Override
    protected void onStart() {
        // TODO Auto-generated method stub
        super.onStart();
        Log.e("MainActivity", "调用onstart");
    }
    @Override
    protected void onResume() {
        // TODO Auto-generated method stub
        super.onResume();
        Log.e("MainActivity", "调用onresume");
    }
    @Override
    protected void onPause() {
        // TODO Auto-generated method stub
        super.onPause();
        Log.e("MainActivity", "调用onpause");
    }

    @Override
    protected void onStop() {
        // TODO Auto-generated method stub
        super.onStop();
        Log.e("MainActivity", "调用onstop");
    }

    @Override
    protected void onDestroy() {
        // TODO Auto-generated method stub
        super.onDestroy();
        Log.e("MainActivity", "调用ondestroy");
    }

    @Override
    protected void onRestart() {
        // TODO Auto-generated method stub
        super.onRestart();
        Log.e("MainActivity", "调用onRestart");
    }

    public void click1(View view){
        Intent intent=new Intent();
        intent.setAction("android.intent.action.VIEW");
        intent.setData(Uri.parse("http://www.baidu.com"));
        startActivity(intent);

    }

 

 

 

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent">

<TextView
android:id="@+id/tv1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerHorizontal="true"
android:layout_marginTop="20dp"
android:text="简易计算器"
android:textColor="#FF0000"
android:textSize="30sp" />

<LinearLayout
android:id="@+id/a1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_below="@id/tv1"
android:layout_centerHorizontal="true"
android:layout_marginTop="10dp"
android:layout_marginBottom="5dp"
android:background="#FFFFFF">

<TextView
android:id="@+id/tv_number1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:padding="10dp"
android:text="数值1:"
android:textSize="20sp"
/>

<EditText
android:id="@+id/et1"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_below="@id/tv1"
/>
</LinearLayout>

<LinearLayout
android:id="@+id/a2"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_below="@id/a1"
android:layout_centerHorizontal="true"
android:layout_marginTop="10dp"
android:layout_marginBottom="5dp"
android:background="#FFFFFF">

<TextView
android:id="@+id/tv_number2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:padding="10dp"
android:text="数值2:"
android:textSize="20sp"
/>

<EditText
android:id="@+id/et2"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_below="@id/tv2"
/>
</LinearLayout>

<TextView
android:id="@+id/tv2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@id/a2"
android:layout_centerHorizontal="true"
android:layout_marginLeft="10dp"
android:layout_marginTop="20dp"
android:gravity="center"
android:text="计算结果"
android:textSize="20sp"
/>

<Button
android:id="@+id/bt1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="27dp"
android:layout_below="@id/tv2"
android:gravity="center"
android:onClick="click"
android:textColor="#FF0000"
android:textSize="25sp"
android:text="+" />

<Button
android:id="@+id/bt2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@id/tv2"
android:layout_toRightOf="@id/bt1"
android:gravity="center"
android:onClick="click"
android:textColor="#FF0000"
android:textSize="25sp"
android:text="-" />

<Button
android:id="@+id/bt3"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@id/tv2"
android:layout_toRightOf="@id/bt2"
android:gravity="center"
android:onClick="click"
android:textColor="#FF0000"
android:textSize="25sp"
android:text="*" />

<Button
android:id="@+id/bt4"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@id/tv2"
android:layout_toRightOf="@id/bt3"
android:gravity="center"
android:onClick="click"
android:textColor="#FF0000"
android:textSize="25sp"
android:text="/" />

</RelativeLayout>

package com.example.myapplication;

import android.os.Bundle;
import android.app.Activity;
import android.view.View;
import android.widget.EditText;
import android.widget.TextView;

public class MainActivity extends Activity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
    }
    public void click(View v) {
                 TextView tv2 = (TextView) findViewById(R.id.tv2);
                 EditText et1 = (EditText) findViewById(R.id.et1);
                 EditText et2 = (EditText) findViewById(R.id.et2);
                 double num1,num2,result=0;
                 num1=Integer.parseInt(et1.getText().toString());
                 num2=Integer.parseInt(et2.getText().toString());

                 switch (v.getId()) {
                         case R.id.bt1:
                                 result=num1+num2;
                                 break;
                         case R.id.bt2:
                                 result=num1-num2;
                                 break;
                         case R.id.bt3:
                                 result=num1*num2;
                                 break;
                         case R.id.bt4:
                                 result=num1/num2;
                                 break;
                     }
                 tv2.setText(result+"");
             }

}