Activity传递数据
一、A—>B方式
1 // A 2 3 // 创建意图时添加 4 5 intent.putExtra("key","value"); 6 7 ... 8 9 // B 10 11 // 获取意图 12 13 Intent intent = getIntent(); 14 15 intent.getString("key");
二、A—>B(批量)
1 // A 2 3 // 添加 4 5 Bundle bundle = new Bundle(); 6 7 bundle.putString("key","value"); 8 9 ... 10 11 // B 12 13 // 获取 14 15 Bundle bundle = intent.getExtras(); 16 17 bundle.getString("key");
三、A—>B—>A
1 // A 2 3 private static final String BLACK_RESULT = 0; 4 5 Intent intent = new Intent(this,BlackActivity.class); 6 7 Bundle bundle = new Bundle(); 8 9 bundle.putString("replay",replay); 10 11 intent.putExtras(bundle); 12 13 this.startActivityForResult(intent,BLACK_RESULT); 14 15 ... 16 17 18 // B 19 20 // 获取A的数据 21 22 Bundle bundle = this.getIntent().getExtras(); 23 24 replay = bundle.getString("replay"); 25 26 ... 27 28 // 创建意图，返回数据 29 30 Intent intent = new Intent(); 31 32 Bundle bundle = new Bundle(); 33 34 bundle.putString("replay",replay); 35 36 intent.putExtras(bundle); 37 38 this.setResult(RESULT_OK,intent); 39 40 this.finish();
以上已经完成A到B以及B发送数据的过程，下面A处理接收B的数据
1 //重新A的方法 2 3 @Override 4 5 protected void onActivityResult(int requestCode,int resultCode,Intent data){ 6 7 switch(resultCode){ 8 9 case RESULT_OK: 10 11 Bundle b = data.getExtras(); 12 13 replay = b.getString("replay"); 14 15 } 16 17 } 18 19 //为了使程序完善，重写B的返回键 20 21 @Override 22 23 public boolean onKeyDown(int keyCode, KeyEvent event) { 24 25 if (keyCode == KeyEvent.KEYCODE_BACK && 26 27 event.getRepeatCount() == 0) { 28 29 replaySend(); 30 31 return true; 32 33 } else 34 35 return super.onKeyDown(keyCode, event); 36 37 }
