Question

如何在Android中暂停和恢复圆圈进度条？

public void run(){
    new Thread(new Runnable() {
        @Override
        public void run() {
            while (pStatus<100){
                pStatus += 1;
                mHandler.post(new Runnable() {
                    @Override
                    public void run() {
                        mProgressBar.setProgress(pStatus);
                    }
                });
                try {
                    Thread.sleep(200);
                }catch (InterruptedException e){
                    e.printStackTrace();
                }
            }
        }
    }).start();
}

我需要任何圈子进度的例子（可以暂停和恢复）。

Answer 1

我开发了演示应用程序的源代码如下：

public class MainActivity extends ActionBarActivity {

ProgressBar mProgressBar;
private int pStatus = 0;
boolean resumed = true;
private TextView textView;
Button button1;
private Handler mHandler = new Handler();

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    mProgressBar = (ProgressBar) findViewById(R.id.progressBar1);
    textView = (TextView) findViewById(R.id.textView1);
    button1 = (Button) findViewById(R.id.button1);
    button1.setOnClickListener(new OnClickListener() {

        @Override
        public void onClick(View v) {
            // TODO Auto-generated method stub
            if (resumed) {
                resumed = false;
            } else {
                resumed = true;
            }
        }
    });

    run();

}

public void run() {
    new Thread(new Runnable() {
        @Override
        public void run() {
            while (pStatus < 100) {
                if (resumed) {
                    pStatus += 1;
                }
                mHandler.post(new Runnable() {
                    @Override
                    public void run() {
                        mProgressBar.setProgress(pStatus);
                    }
                });
                try {
                    Thread.sleep(200);
                } catch (InterruptedException e) {
                    e.printStackTrace();
                }
            }
        }
    }).start();
}

@Override
public boolean onCreateOptionsMenu(Menu menu) {
    // Inflate the menu; this adds items to the action bar if it is present.
    getMenuInflater().inflate(R.menu.main, menu);
    return true;
}

@Override
public boolean onOptionsItemSelected(MenuItem item) {
    // Handle action bar item clicks here. The action bar will
    // automatically handle clicks on the Home/Up button, so long
    // as you specify a parent activity in AndroidManifest.xml.
    int id = item.getItemId();
    if (id == R.id.action_settings) {
        return true;
    }
    return super.onOptionsItemSelected(item);
}
}

actvity_main.xml文件如下：

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".MainActivity" >

<ProgressBar
    android:id="@+id/progressBar1"
    style="?android:attr/progressBarStyleHorizontal"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_alignParentLeft="true"
    android:layout_alignParentTop="true"
    android:layout_marginLeft="23dp"
    android:layout_marginTop="20dp"
    android:indeterminate="false"
    android:max="100"
    android:minHeight="50dp"
    android:minWidth="200dp"
    android:progress="1" />

<TextView
    android:id="@+id/textView1"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_alignLeft="@+id/progressBar1"
    android:layout_below="@+id/progressBar1" />

<Button
    android:id="@+id/button1"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_alignLeft="@+id/textView1"
    android:layout_below="@+id/textView1"
    android:layout_marginTop="52dp"
    android:text="Paused" />

 </RelativeLayout>

我可以暂停并恢复进度条，您也可以尝试使用此代码。

在android中暂停并恢复循环进度条

1 个答案: