Activity之间的跳转和数据传输

1.显式跳转

protected void onCreate(@Nullable Bundle savedInstanceState) {

super.onCreate(savedInstanceState);        setContentView(R.layout.activity_a);        bt1= (Button) findViewById(R.id.btn_jumptoB);        bt1.setOnClickListener(new View.OnClickListener() {            @Override            public void onClick(View view) {//                显式                Intent intent=new Intent(AActivity.this,BActivity.class);//                Intent intent=new Intent();                intent.setAction("sankuai.com");                Bundle bundle=new Bundle();                bundle.putString("name","lijing");                intent.putExtras(bundle);                startActivityForResult(intent,10086);            }        });

}

2.隐式跳转

protected void onCreate(@Nullable Bundle savedInstanceState) {

super.onCreate(savedInstanceState);        setContentView(R.layout.activity_a);        bt1= (Button) findViewById(R.id.btn_jumptoB);        bt1.setOnClickListener(new View.OnClickListener() {            @Override            public void onClick(View view) {//                显式//                Intent intent=new Intent(AActivity.this,BActivity.class);//                隐式                Intent intent=new Intent();                intent.setAction("sankuai.com");                Bundle bundle=new Bundle();                bundle.putString("name","lijing");                intent.putExtras(bundle);                startActivityForResult(intent,10086);            }        });    }

Manifest文件中针对目标activity

<activity android:name=".jump.BActivity"    android:label="B">    <intent-filter>        <action android:name="sankuai.com" />        <category android:name="android.intent.category.DEFAULT" />    </intent-filter></activity>

3.把数据传递到目标activity发：

protected void onCreate(@Nullable Bundle savedInstanceState) {

super.onCreate(savedInstanceState);    setContentView(R.layout.activity_a);    bt1= (Button) findViewById(R.id.btn_jumptoB);    bt1.setOnClickListener(new View.OnClickListener() {        @Override        public void onClick(View view) {            Intent intent=new Intent(AActivity.this,BActivity.class);            Bundle bundle=new Bundle();            bundle.putString("name","lijing");            intent.putExtras(bundle);            startActivityForResult(intent,10086);        }    });

}

收：

在目标activityz中String name=getIntent().getStringExtra("name");

4.返回数据给上一个活动

public void onClick(View view) {    Intent intent=new Intent(AActivity.this,BActivity.class);    Bundle bundle=new Bundle();    bundle.putString("name","lijing");    intent.putExtras(bundle);    startActivityForResult(intent,10086);--10086是requestcode}在目标activity中

buttonxx.setOnClickListener(new View.OnClickListener() {    @Override    public void onClick(View view) {        Intent intent=new Intent();        intent.putExtra("visitor","999999");        setResult(RESULT_OK,intent);--RESULT_OK是resultcode

　　　　finish();

    }});

在BActivity被finish()销毁以后，AActivity会调用

onActivityResult方法，所以需要重写这个方法来接收来自B的传递数据

@Overrideprotected void onActivityResult(int requestCode, int resultCode, Intent data) {    switch (requestCode){        case 10086:            if (resultCode==RESULT_OK){                String result=data.getStringExtra("visitor");                Log.d("visitor",result);            }            break;    }

总结：

startActivity只能传递给目标activity数据

startActivityForResult：既能传递数据，也能从另一个activity中回调数据给自己，如果两种都需要，可以直接使用

startActivityForResult。

原文地址：https://www.cnblogs.com/AppTester/p/9941742.html