Android中Activity之间的跳转跟参数传递

1.从AActivity跳转到BActivity,不需要传递参数

Intent intent = new Intent(AActivity.this,BActivity.class);//intent.addFlags(Intent.FLAG_ACTIVITY_BROUGHT_TO_FRONT);//设置Activity的打开方式startActivity(intent);

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2.从AActivity跳转到BActivity,并向BActivity传递参数

? ? 向BActivity传递参数

Intent intent = new Intent(AActivity.this,BActivity.class);intent.putExtra("key1","value1");intent.putExtra("key2","value2");//...startActivity(intent);

? ? 在BActivity中获取AActivity传过来的参数

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//获取前一个Activity传递的instance_idBundle extras = getIntent().getExtras(); String value1 = extras.getString("key1");String value2 = extras.getString("key2");

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3.从AActivity跳转到BActivity,退出BActivity时向AActivity返回参数

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AActivity中：

Intent intent = new Intent(AActivity.this,BActivity.class);startActivityForResult(intent,1);

BActivity.this.setResult(1);//返回int型数值BActivity.this.finish();

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AActivity中：

@Overridepublic void onActivityResult(int requestCode, int resultCode, Intent data){    Log.i("BActivity返回值",String.valueOf(resultCode));}

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