Intent.使用小结

心已赠人 2022-06-04 07:05 117阅读 0赞

#### **打电话** ####

Intent callIntent = new Intent(Intent.ACTION\_CALL, Uri.parse(“tel:12345678”));  
startActivity(callIntent);

权限拒绝后就不能再拨打电话了，6.0后可以加一个权限管理对于这种危险权限

#### **通过一个url跳转到一个网页** ####

@Override  
        public void onCreate(Bundle savedInstanceState) {  
            super.onCreate(savedInstanceState);  
            setContentView(R.layout.activity_main);  
            button = (Button)findViewById(R.id.button1);     
            button.setOnClickListener(new MyListener());    
            final Uri uri = Uri.parse("http://weibo.cn/qlyh");  
            intent = new Intent(Intent.ACTION_VIEW, uri);    
            timer = new Timer();  
        }  
        class MyTimerTask extends TimerTask {   
            @Override  
            public void run() {  
                startActivity(intent);  
            }     
        }      
        class MyListener implements OnClickListener {   
            public void onClick(View v) {  
                if(task != null)  
                    task.cancel();  
                task = new MyTimerTask();  
                timer.schedule(task, 1000);  
            }  
        }

#### **使用Intent在onReceive中跳转** ####

package com.jack.buttonkeytest;
    
    import android.content.BroadcastReceiver;
    import android.content.Context;
    import android.content.Intent;
    
    public class MyReceiver extends BroadcastReceiver{ 
    
        @Override
        public void onReceive( Context context, Intent intent) {
            final Context c = context;
            new Thread(){
                @Override
                public void run() {
                    super.run();
                    Intent intent = new Intent(c, ShowActivity.class);
                    c.startActivity(intent);
                }
            }.start();
        }
    }