Activity通过bundle传递数据

从AActivity.java向BActivity.java传递数据：

建立AActivity.java文件建立bundle：

public class AActivity extends AppCompatActivity {
    private Button btnJump;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_aactivity);
        btnJump=findViewById(R.id.jump);
        btnJump.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                //数据传递
                Intent intent=new Intent(AActivity.this,BActivity.class);
                Bundle bundle=new Bundle();
                bundle.putString("name","霉霉");
                bundle.putInt("age",30);
                intent.putExtras(bundle);
                startActivity(intent);

            }
        });
    }
}

在BActivity.java文件中接收bundle：

public class BActivity extends AppCompatActivity {
    private TextView TVtitle2;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_bactivity);
        TVtitle2=findViewById(R.id.tv_title2);

        Bundle bundle=getIntent().getExtras();
        String name=bundle.getString("name");
        int age=bundle.getInt("age");//传递数据

        TVtitle2.setText(name+":"+age);
    }
}